David s



(No Model.)

1). s, THOMAS." v Windmill. No.- 236,859. Patented Jan. 18,1881.

INVENTOR:

' ATTORNEYS.

UNITED STATES PATENT OFFIc DAVID S. THOMAS, OF NORTH PLATTE, NEBRASKA.

WIND'MILL.

SPECIFICATION forming part of Letters Patent No. 236,859, dated January 18, 1881.

Application filed May 10, 1880. (No model.)

To all whom it may concern Be it known that I, DAVID S. THOMAS, of North Platte, in the county of Lincoln and State of Nebraska, have invented a new and Improved Windmill, of which the following is a specification.

The object of this invention is to provide an improved device for controlling or adjusting the sails or vanes of a windmill.

The invention consists of a clutch wheel or spider and of aIspirallygrooved loose sleeve (the latter having a small vane attached) fixed on the axle of the wind-wheel, which sleeve engages with a stud, and being turned in one direction draws the wind-wheel inward to clutch with the spider, whereby the vanes of the former are set to the wind, said vane on the loose sleeve serving also as a means for adjusting or throwing flat the vanes of the wind-wheel in a high wind.

Figure 1 is apartly-sectionalzside elevation of a windmill, showing the device attached. Fig. 2 is a perspective view of the hub of the wind-wheel. Fig. 3 is a perspective View of the hub of the clutch-spider. Fig. 4 is ahorizontal section of a portion of the wind-wheel hub and clutch-spider hub, showing their engagement with each other; and Fig. 5 is a plan view of the turn-table with the vane and windwheel broken away.

Similar letters of reference indicate corresponding parts.

In the drawings, Arepresents the standard supporting the wind-wheel and attachments, on the top of which standard A is the thimble or support 13,011 which the turn-table 0 turns. From the rear end of this turn-table the di, recting-vane D projects, while on the front of said turn-table O are fixed the outer and inner 4o journal-boxes, E F, respectively.

G is the axle, journaled in said boxes E F, and having keyed or otherwise secured on its outer end the wind-wheel H, whose vanes or sails h h turn loosely on the spokes m m. The hub of said wind-wheel H is provided on its inner face with projecting studs n n, that are designed to engage in the sockets o o in the face of the hubzof the opposite spider, K. Said spider K is loosely fitted on the axle Gr, between the wheel H and the outer journal-box, E, and

consists of a hub provided with radial spokes or rods p 10, that are inclined outward to enable them, when it is desired, to engage against the sails or vanes of the wind-wheel H. The hub of this spider K is provided with sockets 00,for the engagementtherein of the studs an of the wind-wheel H or the wind-wheel may be provided with the clutch-sockets, and the spider with the corresponding studs; or other equivalent device may be employed for clutching the two together.

A sleeve, L, is placed loosely upon the axle G, and rests in the journal-box F, with its inner end against the shoulder r of the axle G, said sleeve L being provided with a spiral groove, s, on its outside, and having firmly secured upon it a radial rod, t, carrying a small sail or vane,M.

The top or cover of the journal-box F is provided with an interiorly projecting stud, u, that engages in the groove s of the sleeve L.

On pulling the cord N that is fastened to the rod t the sleeve L is thereby turned, with the effect of moving the axle G and its attached wind-wheel H rearward, so that the studs an of said wheel are engaged in the sockets o 0 of the spider K, and the sails or vanes h h,

turning against the rods 12 p of said spider K, are thereby set and held to the wind. If the cord N be released, a high wind operating against the vane M will cause said vane M to turn back, moving the sleeve L with it, and thereby releasing the clutch of the wind-wheel H with the spider K, and consequently the sails or vanes h h will swing straight with the wind.

The power of this windmill is applied to a pump or other mechanism by means of the crank P.

'Thevanes or sails of this device are designed to be connected together by aband or ring fastened to their inner ends, so that they shall all move together.

Having thus described my invention,I claim as new and desire to secure by Letters Patent 1. A windmill constructed substantially as herein shown and described, with wind-wheel H, provided with studsn n, spidcrK, provided with sockets o 0, axle-sleeve L, provided with meme-f spiral groove 8, and vane and rod Mt, and journal-box F, provided with stud u, as set forth.

2. In a windmill, the longitudinally-moving 5 axle G, provided with a loose grooved sleeve L, and journal-box cover, provided with stud u, substantially as herein shown and described.

3. In a. windmill, the combination, with the wind-wheel H, of the spider K, substantially 10 as herein shown and described, the one being provided with clutch-studs, and the other with corresponding sockets, as set forth.

4. As a means for adjusting the sails or vanes of a windmill, the spirally-grooved loose sleeve L, vane and rod M t, and fixed stud u, sub- 15 stantiall y as herein shown and described.

DAVID SHELDON THOMAS. Witnesses:

CHARLES MCDONALD, WM. P. LEVY. 

